S: (adj) busy (busy%3:00:01:active:06) (crowded with or characterized by much activity) "a very busy week"; "a busy life"; "a busy street"; "a busy seaport"
S: (adj) busy (busy%3:00:00:occupied:00), engaged (engaged%3:00:00:occupied:00), in use (in_use%3:00:00:occupied:00) ((of facilities such as telephones or lavatories) unavailable for use by anyone else or indicating unavailability; (`engaged' is a British term for a busy telephone line)) "her line is busy"; "receptionists' telephones are always engaged"; "the lavatory is in use"; "kept getting a busy signal"